Taylor Swift, whose billion-dollar Eras tour redirected the flow of commerce and social media this summer, has fashioned herself as 2023’s main character. With the global release of her concert film, the 33-year-old singer is arguably teetering on the brink of overexposure. It’s also her most cogent and immersive argument against it – a near-exact replica of the stadium show that reinforced her inexhaustible talent and undeniable status as pop’s pre-eminent songwriter.